Packing means for stuffing-boxes.



M. COLLiNS. PACKING MEANS FOR STUPFING BOXES. APPLICATION FILED APB.23, 1910.

990,841 Patented May 2, 1911.

Jficizael 00am WITNESSES TTO EY FACKING- MEANS FDR STUFFING-BOXES.

fipecification of Letters Patent.

Patented May 2, fiwlih Application filed April as, 1910. Serial no. 55min. i

To all whom it may concern:

Be known that l, MIOHAEL (mins, a citizen of the United States, residing at Philadelphia, county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Packing Means for Smiling-Boxes, of which the following is a specification.

The object of my invention is to provide a novel, simple and efficient packing means for stutfing-bokes of piston rods and the like, said means having provision whereby packing compressible longitudinally of the rods may be employed and adjusted. to properly pack the rods, and whereby the packing may be readily removed from the box when de sired for renewal and for other purposes.

To this end the invention consists in the novel construction and combinations of parts hereinafter fully described and particularly claimed.

In the drawings: Figure l. is a longitudinal section of a stuliing box and my improved packing means applied thereto. Fig. 2 is an elevation of one of the compressible packing rings. Fig. 3 is a vertical section through the inner end collar. Fig. l is an elevation of the follower adapted to engage the compressible packing. Fig. 5 is a side view of 30 the collar surrounding the compressible pack Extending through openings in the flange F5 are the outer screw-threaded ends of rods or bolts 'Lthe inner ends of which are screwthreaded and screwed into the box 2. Screwed on to the rods 7 outwardly of the fiange'fi are nuts 8, which when turned will engage ghe figange 6 and force the follower 5 into the The stutling'box thus far described is of common and well known construction.

Located within the box 2 is an inner coinpensating ring 9 provided with an inner beveled face fitted to the beveled face of the wall l and provided with an outer face an ranged at right angles to the rod 3. Surrounding the rod 3 adjacent the ring 9 is a packing ring 10; and surrounding the rod 3 outwardly of the packing ring 10 and within. the box 2 is a cage 11. The main body of the cage 11 surrounds the rod 3 in spaced relation thereto, and is fitted to the inner wall of the box 2; and'the cage 11 is pro vided with an inner end wall 12 which is fitted to the rod 3 and is engaged with the packing ring 10 and closes the inner end all the space between the rod 3 and the main body of the cage 11, the outer end of the space between the cage 11 and rod 3 being open as shown.

Surrounding the rod 3 within the cage 11 are packing rings 14: which are arranged in engagement with each other and also in engagement with the inner end of the cage 11; and surrounding the rod 3 and extending into the outer open end of the cage 11 and engaged with the packing rings 14: is a follower 15, the outer end of which is provided with a flange 1.6 which is fitted to the inner wall of the stufiing box 2. i The packing rings 10 and 14: may be constructed of any suitable material which is compressible longitudinally of the rod 3; and in constructing these packing rings any well known packing now upon the market having the characteristics of being compressible longitudinally of the rod 3 may be employed.

The parts thus far described located within the stufling box 2 are all adjustable longitudinally of the rod 3 and relatively to each other and to said rod, and the outer flanged end of the followerlti is'engaged by the inner end of the main follower 5. it will therefore be seen that by turning the nnts 8 the follower 5 and therewith the follower 15 may be forced into the stuihng box 2 toward the end wall 4: thereof, thereby squeezing the terprojecting parts 21 and holding the two the collar 9 and the cage 11 and forcing it into close contact with the cage 11 and inner wall of the stufling box 2 thereby effectually .packing the rod 3 and preventing any leakage longitudinally thereof through the stuffing box 2.

It is not usually convenient toapply packing devices to rods from the ends thereof, and therefor in order to permit my improved packing means to be applied to and removed from the rod 3'laterallythereof after said means is withdrawn from the stufiingbox 2 longitudinally of the rods, I make the collar 9, cage 11 and packing rings 10' and 14: and follower 15 'each in two parts or two halves, as is clearly shown in the drawings, so that by separating the two parts or two halves of the different elements of my device, the same may be readily removed'from or applied to the rod 3 laterally thereof. Also the separation of the two parts or two halves of the cagell permit the ready removal of the packing rings 14.

The two parts or halves of the .collar 9 are held together by a split spring ring 17 arranged within a groove 18 in the collar 9 and embracing the two parts thereof, as shown; and the 'i .ve parts of the follower 15 are similarly held together by a split spring ring 19 arranged within a groove 20 in the flange 16 of the follower 15 and embracing the two parts of the follower and holding them together, The meeting portions of the two parts of the cage 11 are provided with interprojecting parts 21, as clearly shown in the drawings, and extending through the inparts of the cage 11 to ether, are removable longitudinally arranged rods or pins 22', by the removal of which the two parts of the cage 11 may be readily separated.

While I have herein shown and describedmyinvention in a desirable and practicable form, I do not limit myself to this particular construction, as the same may be greatly 50 modified without departing from my inven tion. 5

I claim:

1. The combination of a stuffing box having an inner end wall; a rod extending through the box; packing surrounding the rod and compressible longitudinally of the rod; a two part cage surrounding the packing within said box and having an inner end wall engaged with the packing, said cage being removable from the box; means forholding the parts of said cage together; a two part follower surrounding the rod and movable into and from said cage and having its outer end movable into and from said box; means for holding the two parts of said follower together; a second follower surrounding the rod and engaged with the first named follower and movable into and from said box; and adjusting means for the last named follower.

2. The combination of a stufiing box having an inner end wall; a'rod extending through the box; packing surrounding the rod and compressible longitudinally of the rod; a cage surrounding the packing within said box and removable therefrom; a compressible packing ring surrounding the rod between said end wall and the inner end of rod; a cage surrounding the packing within sa1d box and having an inner-end wall engaged with the packing, said cage being removable from said box; a-packing ring surrounding the rod between said end walls, said packing ring being engaged with said box, said rod and said cage, and said packing ring being compressible longitudinally of the rod; a follower surrounding the rod and movable into and from said cage; and adjusting means for said follower.

4. The combination of a stufling box hav ing an inner, beveled end Wall; a rod extending through the box; a cage surrounding the packing within said box and having an inner end wall engaged with the packing, said cage being removable from said box; a collar surrounding the rod. and having a beveled face engaged with said beveled end wall; a packing ring surrounding the rod between said cage and said collar and engaged therewith and with said rod and said box, said packing ring being compressible longitudinally of the rod; a follower surrounding the rod and movable into and from said cage; and adjusting means for said follower.

5. The combination of a stufiing box having an inner end wall; a rod extending through the box; packing surrounding the rod and compressible longitudinally of the rod; a cage surrounding the packing within said box and removable therefrom; a two-part follower surrounding the and and movable into and from said cage, the parts of said follower being removable from. the rod laterally thereof; means for holding the two parts of said follower together; and ad justing means for said follower.

6. The, combination of a stuffing box having an inner end well; a rod extending through the box; pecking surrounding the rod and compressible longitudinally of the rod; a cage surrounding the packing Within said box and removable therefrom; a twopart follower surrounding the rod and movable into and from said cage; a split, spring ring engaged with the two parts of said follower and holding them together; and ad- 10 justing means for said follower.

In testimony whereof I afiix my signature in the presence of two Witnesses.

MroHAEL'ooLLiNs.

-Witnesser-iz A. V. GROUPE,

S. I. HARPER. 

